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intel/fs: Add an option to lower variable group size in backend

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Adding this since Iris will handle variable group size parameters by
itself.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4794>
This commit is contained in:
Caio Marcelo de Oliveira Filho 2020-04-28 09:47:45 -07:00
parent 0edb58a84e
commit 4b000b491a
3 changed files with 11 additions and 1 deletions
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6
src/intel/compiler/brw_compiler.h
View file

@ -125,6 +125,12 @@ struct brw_compiler {
* back-end compiler.
*/
bool compact_params;
/**
* Whether or not the driver wants variable group size to be lowered by the
* back-end compiler.
*/
bool lower_variable_group_size;
};
/**

5
src/intel/compiler/brw_fs_nir.cpp
View file

@ -105,7 +105,8 @@ fs_visitor::nir_setup_uniforms()
assert(uniforms == prog_data->nr_params);
uint32_t *param;
if (nir->info.cs.local_size_variable) {
if (nir->info.cs.local_size_variable &&
compiler->lower_variable_group_size) {
param = brw_stage_prog_data_add_params(prog_data, 3);
for (unsigned i = 0; i < 3; i++) {
param[i] = (BRW_PARAM_BUILTIN_WORK_GROUP_SIZE_X + i);
@ -3869,6 +3870,8 @@ fs_visitor::nir_emit_cs_intrinsic(const fs_builder &bld,
}
case nir_intrinsic_load_local_group_size: {
assert(compiler->lower_variable_group_size);
assert(nir->info.cs.local_size_variable);
for (unsigned i = 0; i < 3; i++) {
bld.MOV(retype(offset(dest, bld, i), BRW_REGISTER_TYPE_UD),
group_size[i]);

1
src/mesa/drivers/dri/i965/intel_screen.c
View file

@ -2823,6 +2823,7 @@ __DRIconfig **intelInitScreen2(__DRIscreen *dri_screen)
screen->compiler->supports_pull_constants = true;
screen->compiler->compact_params = true;
screen->compiler->lower_variable_group_size = true;
screen->has_exec_fence =
intel_get_boolean(screen, I915_PARAM_HAS_EXEC_FENCE);